GREYHOUND Household Waste has accused staff members of deliberately stopping its strike-breaking temporary workers from collecting waste.
Residents in Dublin have received notifications that their rubbish collection has been delayed, owing to the actions of the company's protesting staff.
Greyhound has been locked in a dispute with SIPTU over draconian pay cuts of up to 35pc for waste collectors.
It has hired contractors to carry out the work during the industrial action.
The company has previously claimed that the contractors were working more efficiently than staff members.
But notices posted to a number of areas around Dublin, including recently to Collins Avenue, have claimed that collection delays were being caused by "certain" members of the union.
"Unfortunately, there will be a delay in collections in your area today due to a small group of SIPTU picketers who are not allowing us to collect your household waste safely," the notice said.
"We cannot collect your bins safely because this group of SIPTU picketers are deliberately following behind our trucks in groups of cars and stopping us from exiting our vehicles to collect your bins," it added.
"We realise this stops your waste from being collected and we apologise for this inconvenience to you and your families.
"However, this is out of our control and in the hands of the SIPTU picketers," the notice said.
A spokesperson for SIPTU told the Herald that the union no longer comments to titles owned by Independent News and Media.
Meanwhile, Michael Buckley, the CEO of Greyhound, said that the workers were the highest-paid waste collectors in Europe.
"We're in a situation with the collection crews, where we're actually paying 60pc more than the average," he said.
Mr Buckley said that there was a cultural issue in the company, since it was bought from Dublin City Council.